Connection plug



May s, 192s. 1,669,013"

E. B. NOWOSIELSKI CONNEGTI ON PLUG Filed March 15. 1924 Patented May8,1928.

UNITED STATES PATENT OFFICE.

EDWARD B. NOWOSIELSKI, OF NEWARK, NEW JERSEY, ASSIGNOB., BY MESNE AB-SIGNHENTS, TO SEABOARD ENGINEERING CORPORATION, O1? NEWARK, NEW JERSEY,A CORPORATION OF NEW JERSEY.

coNNnc'rIoN PLUG.

Application led March 15, 1924. Serialllo. 699,417.

cuit terminals can be quickly attached, andA after the terminals are inplace, they are prevented from being accidentally withl drawn by strainsor jerks on the conductors connected to the terminals.

Another object of m invention is to provide a plug whichw' l make goodcontact with thereceiver orv conductor terminals, all

20 of these cooperatin parts bein completely protected in a cham r ofthe p ug.

It is another object of my invention. to provide a plug which containsthe previously mentioned features and in addition one that 25 is easy tomanufacture and a plug that is strong and durable.

Other objects will be further a parent after a study of thespecification an drawinannexed heretoin which:

an igure 1 is a sectional view on the line 1/1 of Fi 2 with theconductor strain clip remove v Figure 2 is a side view of the assembledpliig, while an igure 3 is a plan view; and

Figure 4 is an enlarged view showing the manner of attaching theconductor strain.

cli to the plug.

fn the drawing, 1 and 2 are duplicate o parts, preferably of a mouldedlinsulating material, depressions 3 being moulded in each piece and thetwo pieces fastened together in any suitable manner as by rivets 4,three being shown for this purpose. The

w two depressions 3 in each part 1 and 2 form a chamber within which thesprings 5 and 6 are mounted, the sprin 6 being fastened to the end ofthe cylin rical member 7 by spinning the end of the member 7 over and a@Soldering the spring 6 thereto. The member 7 has an annular flange 8fitting iu an annular space that communicates with a semicirculaiopening for the member 7 that is moulded in each of the parts 1 and 2,so

Y other thereby moving that it will be seen that the annular flange 7assists in locking the cylindrical member 7, which constitutes one ofthe conductors of the plug, securely to the handle. The spring 5 isinsulated from the spring 6 by an insulator 9, having preferablyanintegral collar 10 whichextends into the end of the cylindrical member7. Spring 5 has a conductor pin 11 riveted and soldered thereto andextends through the tubular member 7, being insulated at the outer endby the insulators `12 and 13 and a tip ball shaped member 14 is screwedonto the threaded end ,of .the member 11, drawing the parts securel intoposition. The handle is rovided wit orifices leading into the cham er atthe opposite end from the plug portion and each of these orifices isformed with shoulders 15 and 16. The orifices are of a size to easilypermit the passage therethrough ofthe terminals 17 and 18 that areconnected to the insulated conductors 19 and 20. As the ends of theterminals, which are shown in dotted position Fig. 1, engage the springmembers 5 and 6, they are caused to tilttoward each the ends of theterminals over the shou ers 15 and 16, formi alocking means whichprevents strains an jerks on the conductors 19 and 20 from accidentallywithdrawing the terminals from contact with thepsprings 5 and 6. Thesesprings are formed so as to give considerable area of contact with theterminals.

In order to touching each ot er as they are tilted by the springs, apartition 21 of insulating material revent the terminals from Iispreferably moulded ineach of the members and 2. A hole for a rivet 4being also provided at the 'unctio'n of the partition with the end of te material of the handle members land 2. A recess 22 is moulded at thebase of the partition and this recess is provided with shoulders 23, andin this' shouldered recess the anchor end 24 of a strain clip 25 isplaced before the parts 1 and 2 are fastened together. Clip 25 has ahole 26 which is used for attaching -the strain cord that carries theconductors 19 and ,20.

tapped holes required in the construction of this plug except that inthe ball or tip and that all that is necessary to make connection is toslip the terminals 19 and 20 into the oriices provided and they areautomatically It isseen that there are no screws or moved to lockingposition. If lit is desired to disconnect the, terminals from the plug,the conductors 19 and 20 are drawn toward each other, which causes theends ofthe terminals to pass from off the shoulders, l5 and 16 andallowing the terminals to be withdrawn. In other words, to makeconnection with this plug no tools are required and the plug inoperation does not have to be opened u to make any connections, therebyallowlng the lug to be transferred to another set of con uctors oranother receiver ver quickly.

While have shown one form of carrying out these advantageous features,it will be readily perceived that the details of the construction may bevaried without departing from the spirit of my yinvention and the scofpeof the appended claims.

aving thus described my invention what I claim is:

1. In a device of the class described, a handle composed of two partsfastened together forming a chamber, a pair of couductors, one insulatedfrom the other, forming a plug passing through the handle into saidchamber, springs within the chamber connected to each of saidconductors` and adapted to engage circuit terminals entering the chamberat its opposite'end, causing them to tilt, and means associated with thehandle part for engaging the outer ends of said terminals when in saidtilted position.

2. In a device of the class described, a

handle composed of two parts of insulation material fastened togetherforming a chamber, a pair of conductors, one insulated from the other,forming a plug passing through one end of the handle into said chamber,said handle having in its opposite end openings for circuit terminalshoulders formed in the handle adjacent said openings, springs withinthe chamber connected to each of said conductors and adapted to extendinto engagement with said circuit terminals so as to cause them to tiltand move a part thereof over said shoulders for the purpose described.

3. In a device of the class described, a handle composed of two similarparts of insulatin material fastened together formin a c amber, a pairof conductors one insu ated from the other forming a plug passingthrough one end of the handle into said chamber, a partition in saidchamber, a spring connected to each of said plug conductors andextending toward the opposite end of the chamber, one on each side ofthe partition, said chamber having4 an opening in said opposite endon'both sides of said partition, shoulders formed near one end of saidopenings, said openings adapted to receive terminals for engagement withsaid springs, said terminals being tilted by the springs whereby theends of said terminals engage said shoulders for the purpose described.

4. In a plug of the telephone type, comprising contact portionsinsulated from each other and adapted to be inserted in a Aspring jack,a hollow insulating handle for said Contact portions and a pair of jacksprings arranged on opposite sides and within the lilollow part of thehandle and adapted to engage pin cord tips, said springs beingelectrically connected to said contact portions and acting to move theinner ends of said cord tips toward each other and the outer ends ofsaid tips away from each other, and means comprising the cord tips andportion of the wall of the handle for locking said tips in operativeposition.

5. A plug comprising; a hollow handle of insulating material, a tubularconductor passing into the hollow part of the handle and anchored to thewall thereof, a spring attached to said conductor, a second conductorlying within the first but insulated therefrom, a spring fastened tosaid second conductor, said handle having openings 4at its opposite endinto the hollow part and adapted to receive circuit terminals forcontacting with said springs, said springs causing said terminals totilt, said handle having integral means adapted to hold them in lockedposition to cooperate with said terminals after they are tilted by saidsprings.

6. In a device of the class described, a hollow handle having aconductor plug fastened thereto, springs mounted on the conductors ofsaid plug within the hollow handle, said handle adapted to haveterminals enter therein and engage said springs, and means forpreventing the terminals from being accidentally pulled from the handle,comprising shouldered portions against which said terminals are tiltedby said springs, whereb the ends of the terminals engage said shou ders.

7. In a plug of the telephone type, comprising contact portionsinsulated from each other and adapted to be inserted in a spring jack, ahollow insulating handle for said contact portions and a pair of jacksprings arranged on opposite sides and within the hollow part of thehandle and adapted to engage pin cord tips, said springs beingelectrically connected to said contact portions and acting to tilt thecord tips, and means brought into action by the tilting of the cord tipsfor locking them in operative position.

8. In a device of the class described', a hollow handle made up of twosimilar moulded parts fastened together, a conductor plug fastenedthereto, springs mounted on the conductors of said plug within thehollow handle` said handle adapted to have terminals enter therein andengage said springs and means for preventing the terminals from beingaccidentally pulled from the handle coinlli that the lock may bereleased by prisingshouldered portions against which said terminals areltilted by said springs whereby the ends of the terminals engage saidshoulders, and insulating means consti-- forming at one end acircular-opening lead-0 ing from said chamber andan annular spacecommunicating with said opening,4 a cylindi'icalplug member positionedin said opening'and having a flange litting in said annular space,aspring fastened to said plug member and positioned within tl'i'echaniher, a pin supported Within the cylindrical member but insulatedtherefrom and having a spring attached to the eind within the chamberand also having a conductor tipon its outer end for .securing the pinand springs inoperative position, said handle having orifices in the endopposite to the plug meinb'ers, said openings being so formed ,as tohave shoulders for engaging conductor terminals when they arepassedthrough said orifices into engagement with said springs as andfoi' the purpose described, and an insulating partition in the chamberto prevent said terminals froin touching.

`10. In a device of the class described, a hollow handle having plugconductors extending therefrom, said handle having shouldered orificesat the end of the handle opailiiosite to said plug conductors, ineansforin ing locking contact with said conductors comprising springs attachedthereto within the hollow handle and terminals adapted to pass throughsaid oriices in said handle into contact with said springs, said springsacting to oscillate the terminals whereby ythe ends thereof move overthe shoulders in said orifices, said locking contact being such applyinforce substantially 'at right angles to said terminals.

11. In a plug of the telephone type, com` prising a contact portionadapted to be inserted in a spring jack, an insulating handle 'for saidcontact portion and a spring within the handle to releasably engage apin-type cord tip, locking means including 'a part ofv piising Contactportions insulated from each other and adapted to be inserted in aspring jack, a hollo insulating h'andle for said contact portionsmand apair of djack springs arranged on opposite sides an within the hollowpart of the handle and adapted to engage pin cord tips, locking means inthe and yieldinglly;

handle, said springs being electrically connected to said contactportions and acting to move the inner ends of said cord tips toward eachother and the outer ends of said tips into locking engagement with saidlocking means.

13. A telephone plug comprising a handle portion into which a pair ofcord tips are adapted to be introduced, a pair of cordtip-engaging lugsover which the cord ti )s are adapted to pass in entering said handlleportion, and a pair of springs adapted to yieldably. and slidably engagesaid cord tips as they move over said lugs and to thereafter urge thecord tips into position in front of said lugs to be locked therebyagainst withdrawal. y

14.-. A telephone plug comprising a tip coiitact a sleeve contact, acontact spring cooperating with each of said contacts and extending inthe same general direction as said tip and sleeve contacts but olsettherefrom, and a handle portion adapted to house' said spring contactsin` cavities ada ted to receive telephone cord tips in positions to beengagd by said contact springs, said cavities ing provided with entranceopenings having shoulders ada ted to coo rate with' the rear ends of saicord ti s in the positions in which the latter are yieldiiigly held bysaid contact springs.

15. A telephone plug comprising a handle portion havin recesses therein,each adapted to receive a te ephone cord tip and each provided with ashoulder adapted to cooperate with -the rear end of such a tip,'acontact spring` arranged within each of said recesses' and ada ted to enageA a cord tip therein` and yiel ingly hol it against the wall oflthe'recess with the rear end of the tip in engagement with saidshoulder, and contactA members electrically connected to said springsand portion.

16. A telephone plug comprising a handle portion having recessestherein, each adapted to receive a telephone cord tip and each providedatthe entrance tothe recess-with a shoulder adapted to cooperate withthe rear end of such a cord tip, a contact spring arranged within eachof the said recesses and adapted to engage a cord tip therein holditagainst the wall of the recess with t e rear end of said ti inengagement with thev inside of said's oulder, and contactniembe'rselectrically connected to said springs and projecting from said handleportion. i i

portion in two parts having comp ementary cavities therein formingrecesses, each of said recesses being adapted to Vreceive ateleprojecting from said handle iin 17. A telephone plug comprisin ahandle phone cord tip, and each of said handle portions` being vprovidedat the entrances to the recesses formed by them with a shoulder adaptedto cooperate with the rear end of such a cord tip, a contact springarranged Within each of said recesses and adapted to engage ar cord tiptherein and yieldingly hold it against the wall .of the recess with therear end of the tip in engagement with the inside of said shoulder, andcontact members electrically connected to said springs and projectingfrom said lo handle portion.

18. An electrical connector comprisingan mesme EDWARD B. NOWOSIELSKI.

